Newcastle, WY to Gillette, WY is 76.9 miles and takes about 1h 42m via I 90 and US Highway 16, with a fuel budget near $12 and enough daylight to finish in a day. This drive stays within the Mountain West region, specifically within the state of Wyoming. It's a relatively short, straightforward trip that's ideal for a single day of travel. You'll primarily be on highways, making for efficient transit between these two Wyoming cities. Consider this route if you need a quick and no-fuss journey across northeastern Wyoming.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
38.4 miles from Newcastle, WY
A natural place for your longest stop of the day
, about 57m into the drive
.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 1h 42m. Total distance: 76.9 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
This is a highway-focused drive, with 69% of your journey on major roadways like I 90 and US Highway 16. You'll experience a longest stretch of 26.6 miles on I 90, offering a consistent pace for a significant portion of the trip. While mostly highway, the route incorporates sections of US Highway 16 and local roads like 2nd Street as you approach your destination. Expect a steady, functional drive without significant deviations into slower, more winding roads.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 12 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 90 is the longest continuous segment at about 26.6 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on I 90 and US Highway 16. Navigation is very simple - set it and forget it for most of the drive. The trickiest moment comes around 47.9 miles in near I 90 Business / I-90 Access Road.
Driving Effort1/10
Very easy - short and simple to drive
Balances navigation complexity with total wheel time.
The drive from Newcastle, WY to Gillette, WY is easy. At 1h 42m with 69% highway, most drivers will find it relaxed and low-stress.
Where does it get tricky?
The main spots that need attention: at 47.9 miles (I 90 Business / I-90 Access Road): Navigation decision point; at 48.2 miles: Navigation decision point; at 74.9 miles (I 90 Business; US 14; US 16): Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Critical Maneuvers
5 of 6 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
3
47.9 mi into trip|~1h 11m in|I 90 Business / I-90 Access Road
Turn right onto I 90 Business / I-90 Access Road
Navigation decision point
5
48.2 mi into trip|~1h 11m in
Take the ramp
Navigation decision point
6
74.9 mi into trip|~1h 37m in|I 90 Business; US 14; US 16
Take the exit onto I 90 Business; US 14; US 16 toward I 90, US 14 West, US 16 West: Gillette
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Exit 128
Toward I 90, US 14 West, US 16 West: Gillette
4
75.9 mi into trip|~1h 39m in|Stanley Avenue
Turn left onto Stanley Avenue
Navigation decision point
4
76 mi into trip|~1h 39m in|East 4th Street
Turn right onto East 4th Street
Navigation decision point
Main Roads
Road
Distance
Duration
I 90
26.6 mi
25m
US Highway 16
25 mi
37m
2nd Street
20.4 mi
30m
West Main Street
2.1 mi
3m
I 90 Business
1 mi
2m
East 4th Street
0.9 mi
2m
East Converse Street
0.3 mi
<1m
I-90 Access Road
0.3 mi
<1m
Longest stretch:
I 90
— 26.6 mi, about 25m
Turn-by-Turn Driving Directions
Step-by-step road directions between Newcastle, WY and Gillette, WY.
1
Start on US 16
2.1 mi·3 min·West Main Street
2
Continue on US 16
25 mi·37 min·US Highway 16
3
Continue on US 16
20 mi·30 min·2nd Street
4
Continue on US 16
0.3 mi·32 sec·East Converse Street
5
Turn right onto I 90 Business
0.3 mi·32 sec·I-90 Access Road
6
Take the ramp
0.2 mi·12 sec
7
Merge onto I 90
27 mi·25 min·I 90
8
Take the exit onto I 90 Business; US 14; US 16
0.4 mi·47 sec·I 90 Business; US 14; US 16
Exit 128Toward I 90, US 14 West, US 16 West: Gillette
9
Continue on I 90 Business; US 14; US 16; WY 51
0.6 mi·1 min·I 90 Business; US 14; US 16; WY 51
10
Turn left onto Stanley Avenue
208 ft·9 sec·Stanley Avenue
11
Turn right onto East 4th Street
0.9 mi·2 min·East 4th Street
12
Arrive at destination
East 4th Street
Trip Plan
Given the short 1h 42m duration, you have a lot of flexibility with your departure time. Leaving Newcastle, WY in the morning will get you to Gillette, WY with plenty of daylight remaining. With a fuel cost estimated at $12, you won't need to worry excessively about frequent stops for gas. Plan for a single, brief stop if needed, as the longest stretch between services isn't excessively long. When you reach Gillette, be aware that you'll transition from highway driving onto 2nd Street for your final approach.
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
You can normally do this drive in one day.
You may only need one short stretch break if traffic stays light.
The halfway point lands around 38.4 miles from Newcastle, WY, or about 57m into the drive.
The longest continuous stretch on this route runs about 26.6 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 17 miles or 25m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 38.4 miles or 57m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 1h 28m
Traffic, exits, and arrival timing usually matter more near Gillette, WY than in the middle of the route.
Before You Leave
+
Open the route before leaving Newcastle, WY so your first major turns are already loaded.
Day 1
Settle into the route from Newcastle, WY
This is one driving day of about 76.9 miles and 1h 42m.
Your first comfortable stop window is around 17 miles from Newcastle, WY.
This route can stay practical as a one-day drive if traffic stays reasonable.
The longest stretch is on I 90 for about 26.6 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 38.4 mi from Newcastle, WY
· 57m into the drive
Place data sourced from public business listings. Hours and availability may vary.
National Parks Near This Route
Worth a detour if your schedule allows.
Devils Tower National Monument
National Monument
The Tower is an astounding geologic feature that protrudes out of the prairie surrounding the Black Hills. It is considered sacred by Northern Plains Indians and indigenous people. Hundreds of paralle...
25 mi from route
~63 min detour
$25
near mile 47.7
Park Closure: The campground is closed for the season.
Park data from the National Park Service API. Alerts update every 2 hours.
Fuel & Cost
Regular Gas
$12.19 one way
$24.37 round trip
$4.03/gal25.4 MPG avg27 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.22
$12.77
$25.55
premium
$4.53
$13.72
$27.44
diesel
$5.61
$16.98
$33.96
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$12
Meals
$25–$50
Total
$37–$62
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 26.9 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $8 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
23.1
0
$8.07
$3.69
Efficient EV
19.2
0
$6.73
$3.08
EV Truck/SUV
30.8
0
$10.77
$4.92
Gas CO2
27 kg
EV CO2
9 kg (67% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Forecast as of Apr 15, 2026
Origin
Newcastle, WY
Late night
in Newcastle on Saturday
Local time
12:09 AM
MDT
Current temp
76°F
Unavailable
Live forecast
Destination
Gillette, WY
Late night
in Gillette on Saturday
Local time
12:09 AM
MDT
Current temp
73°F
Unavailable
Live forecast
77°F
Upton, WY
38 mi in
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
3 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
1h 42m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Newcastle, WY to Gillette, WY covers 76.9 miles and takes about 1h 42m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 90, US Highway 16, 2nd Street. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 38.4 miles from Newcastle, WY. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $12.19 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Leave by 9 AM and you'll arrive before lunch. Even a 4 PM departure gets you there before dark in summer.
The drive from Newcastle, WY to Gillette, WY is easy. At 1h 42m with 69% highway, most drivers will find it relaxed and low-stress.
The main spots that need attention: at 47.9 miles (I 90 Business / I-90 Access Road): Navigation decision point; at 48.2 miles: Navigation decision point; at 74.9 miles (I 90 Business; US 14; US 16): Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
The route from Newcastle, WY to Gillette, WY does not surface many named destination signs beyond the main corridor.
Yes. Nearby national parks include Devils Tower National Monument.
How this page is built
Compiled by the Trip.ovh planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, and NPS for national parks. See our methodology for refresh cadence and limitations.
